Regulatory Capital - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Total capital (to risk weighted assets)
Actual, Amount	$ 274,611	$ 252,843
Actual, Ratio	0.154	0.153
Minimum Capital Requirements, Amount	$ 187,251	$ 173,923
Minimum Capital Requirements, Ratio	0.105	0.105
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 178,334	$ 165,641
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.100	0.100
Tier 1 capital (to risk weighted assets)
Actual, Amount	$ 254,226	$ 232,458
Actual, Ratio	0.143	0.140
Minimum Capital Requirements, Amount	$ 151,584	$ 140,795
Minimum Capital Requirements, Ratio	0.085	0.085
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 142,668	$ 132,513
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.080	0.080
Common equity tier 1 capital (to risk weighted assets)
Actual, Amount	$ 254,226	$ 232,458
Actual, Ratio	0.143	0.140
Minimum Capital Requirements, Amount	$ 124,834	$ 115,948
Minimum Capital Requirements, Ratio	0.070	0.070
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 115,917	$ 107,666
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.065	0.065
Tier 1 capital (to average assets)
Actual, Amount	$ 254,226	$ 232,458
Actual, Ratio	0.110	0.110
Minimum Capital Requirements, Amount	$ 92,494	$ 84,799
Minimum Capital Requirements, Ratio	0.040	0.040
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 115,618	$ 105,999
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.050	0.050